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RADIATION PHYSICS: How much dose is seen in FACET tunnel and how can I shield equipment from the radiation?

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Title

How much dose is seen in FACET tunnel and how can I shield equipment from the radiation?

Question

​How much dose is seen in FACET tunnel and how can I shield equipment from the radiation?

Answer

There were studies into the radiation dose and shielding methods in FACET in May 2012.
 
Dose readings from approximately a week of beam running show doses of between 1.7 and 3.75 kilorad depending on location on the experiment tables.
 
Dump:
 
 
Shielding results:
 
1/2 inch Pb typically provides shielding factors between x 3.5 and x 7.
 
2" Pb, has a shielding factor between x 11 and x 57. 
 
4" Pb shielding improves on the 2" shielding somewhere between x 4 and x 8.
 
6" Pb shielding essentially provides no additional benefit.
 
Thanks to Clive Field, Henry Tran and Santa Chatterji. 

 

 

 

Attachments

Version: 2.0
Created at 5/24/2012 1:41 PM by Clarke, Christine
Last modified at 5/7/2015 11:40 AM by Clarke, Christine

SLAC SLAC National Accelerator Laboratory, Menlo Park, CA
Operated by Stanford University for the U.S. Dept. of Energy